Spatial control of surface plasmon polariton excitation at planar metal surface
Optics
2014-06-11 v2
Abstract
We illustrate that the surface plasmon polariton (SPP) excitation through the prism coupling method is fundamentally limited by destructive interference of spatial light components. We propose that the destructive interference can be canceled out by tailoring the relative phase for the different spatial components. As a numerical demonstration, we show that through the phase modulation the excited SPP field is concentrated to a hot energy spot, and the SPP field intensity is dramatically enhanced about three folds in comparison with a conventional Gaussian beam illumination.
Keywords
Cite
@article{arxiv.1403.4009,
title = {Spatial control of surface plasmon polariton excitation at planar metal surface},
author = {Zhichao Ruan and Hui Wu and Min Qiu and Shanhui Fan},
journal= {arXiv preprint arXiv:1403.4009},
year = {2014}
}